RU150907U1 - HATCH FOR THE SIGHT WATER HATCH COVER - Google Patents

Abstract

The manhole cover of the manhole, consisting of a box-shaped metal hollow rectangular frame, in the plane of which metal fittings are welded inside with eyebolts to lift the cover, and locks are placed on the outside of the frame, characterized in that the box-shaped metal hollow rectangular frame is tapered with a bevel on the outside and metal tubes having a length equal to the thickness of the frame and internal volume are welded to the metal reinforcement at the points of its intersection perpendicular to the plane of the frame which is poured with concrete or other non-metallic filler, and waterproofing is installed at the bottom.

Description

The utility model relates to the field of underground engineering structures in settlements and is aimed at improving the hatches of manholes of underground engineering urban utilities: water supply, sewage, heating, gas and cable networks.

Hatches of manholes of underground engineering city communications differ in design and materials for production and are designed to protect wells from damage, prevent foreign objects from entering, ensure pedestrian and vehicle traffic, unauthorized access, and also access to underground utilities.

Known manhole manhole (See RF patent for the invention No. 32141), containing a support ring and a cover, characterized in that both the support ring and the cover contain a reinforcing cage, filled with non-metallic binder material.

A well-known manhole cover (see RF patent for utility model No. 52873), comprising a body of reinforced non-metallic material, characterized in that the reinforcement is made in the form of at least two closed reinforcing loops.

Also known is the manhole cover (see RF patent for utility model No. 57302), including a housing made of reinforced non-metallic material, characterized in that the reinforcement is made by a bent profile that is placed in the housing along a circle, or along several concentric circles, or in a spiral .

The main disadvantage of the described designs of the manhole cover is that it can only be manufactured for round hatches of small diameter, since for large hatches, the cracking of the non-metallic filling material increases under load on the surface.

For the prototype, a rectangular cover of sewer manholes manufactured by Canco Fasteners (India) was selected, containing a box-shaped metal hollow rectangular frame, in the plane of which reinforcement from metal strips placed vertically and being stiffeners were welded inside, and locks were placed on the outside of the frame. (See the website http://new-delhi.all.biz/en/layshki-kanalizacionnyh-lyukv-g644857#show0. Date of treatment March 25, 2014).

A significant disadvantage of the prototype is that the metal grill, as its main element, does not provide strength when hitting it with vehicles. This drawback is especially relevant in the manufacture of covers for medium and heavy hatches (see GOST 3634-99, p. 3, table. 1).

The purpose of the utility model is to increase the durability of the manhole cover. The technical result is to increase the strength and crack resistance.

This result is achieved by the fact that in the known device, consisting of a box-shaped metal hollow rectangular frame, in the plane of which metal reinforcement is welded inside and locks are placed on the outside of the frame, the box-shaped metal hollow rectangular frame is tapered with a bevel on the outside, and to the metal reinforcement at the points of its intersection, metal tubes having a length equal to the thickness of the frame, the inner volume of which fills, are welded perpendicular to the plane of the frame I have concrete or other non-metallic filler, and the bottom is set waterproofing. Four eyebands are welded to the metal fittings to lift the lid.

The case plays the role of a power frame and is made conical, which prevents the lid from jamming during its installation and dismantling. Tubes welded to the fittings play the role of additional fittings and a water passage and give the structure additional rigidity under loads on the cover.

The essence of the utility model is illustrated by drawings (Fig. 1 and Fig. 2), where indicated:

1 - box-shaped hollow metal rectangular frame,

2 - metal reinforcement,

3 - constipation,

4 - metal tubes,

5 - eye for lifting the lid,

6 - waterproofing,

7 - concrete pouring.

Fig. 1a shows a bottom view of the reinforcement before the device is poured with concrete, and FIG. 1b sectional view.

In FIG. 2a is a bottom view of the cover assembly, and in FIG. 2b is a plan view.

The manhole cover of the manhole is used as follows.

Using slings of the lifting mechanism (not shown in the figure) fixed by hooks to the eyelets 5, the cover is inserted into the seat of the hatch and using a special key (not shown in the figures) inserted into the locks 3, the box-shaped hollow metal rectangular frame is fixed to the neck of the hatch (on not shown).

When you hit a hatch of a car or other vehicle that has a lot of weight, the concrete casting 7 with the metal reinforcement 2 placed in it bends, as a result of which the upper part of the casting is compressed, and the lower one is stretched. Metal tubes 4 in the places of filling, where they are inserted, take the load on themselves - they are compressed / stretched, which dampens the load on the fill. As a result, the formation of cracks in it decreases. In case of filling the lid with water, water flows through the metal pipes inside the well and is delayed in the waterproofing; the eccentric 5 is turned counterclockwise until it stops inward and the lid is freely installed on the neck of the hatch. Then, using the key, the eccentric 5 of the movable stop 4 is turned clockwise, while the edge of the eccentric 5, interacting with the neck of the hatch, locks the lid. Then, when removing the key from the holes of the eccentric 5 and the hole 2 of the base 1, the plate 9 of the locking device, under the action of the counterweight 12, rotates on the axis 10 in the holes of the brackets 11 and the locking element 13 enters the groove 6 of the eccentric 5, preventing it from turning, and the lid reliably closes the inspection hatch well, the short end of the plate 9 overlaps the central hole of the eccentric 5, the axis of which coincides with the axis of the central rod of the key (Fig. 8), inserted into the hole 2 of the base 1 of the manhole cover under a special key (Fig. 2).

The design of the manhole cover, which provides reliable closing of manholes of underground utilities and allows penetration into them only with the help of a special key, which makes it easy to lift and remove the cover from the well for inspection or necessary work, will find industrial application.

Claims (1)

The manhole cover of the manhole, consisting of a box-shaped metal hollow rectangular frame, in the plane of which metal fittings are welded inside with eyebolts to lift the cover, and locks are placed on the outside of the frame, characterized in that the box-shaped metal hollow rectangular frame is tapered with a bevel on the outside and metal tubes having a length equal to the thickness of the frame and internal volume are welded to the metal reinforcement at the points of its intersection perpendicular to the plane of the frame which is poured with concrete or other non-metallic filler, and waterproofing is installed at the bottom.

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